Diameter-controlled synthesis of silicon nanowires using nanoporous alumina membranes

Timothy E. Bogart, Soham Dey, Kok Keong Lew, Suzanne E. Mohney, Joan Marie Redwing

Research output: Contribution to journalArticle

82 Scopus citations

Abstract

Anodized alumina membranes prepared with average pore diameters ranging from 45 nm to 150 nm were investigated. Transmission electron microscopy (TEM) was used to further investigate the size differences between SiNW samples grown within the membrane and grown out of the membrane surface. Vapor-liquid-solid (VLS) growth conditions required to synthesize silicon nanostructures (SiNW) in the membranes were investigated. High-density arrays of SiNWs were obtained with diameter distributions that closely matched the pore size distribution of the membranes. The results show that the increase in SiNW diameter upon growth out of the end of the pores is due to a change in the shape of the Au tip from cylindrical to hemispherical.

Original languageEnglish (US)
Pages (from-to)114-117
Number of pages4
JournalAdvanced Materials
Volume17
Issue number1
DOIs
StatePublished - Jan 18 2005

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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